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Table 1 Radiographic disc and facet joint degeneration

From: Risk factor analysis of disc and facet joint degeneration after intersegmental pedicle screw fixation for lumbar spondylolysis

  L4/5 (%) L5S1 (%)
X-ray
DH: decrease ≥ 20% 1 (2%) 1 (2%)
DH: 20% ≥ decrease ≥ 10% 7 (13%) 8 (15%)
CT
Facet degeneration increase one grade 7 (13%) 7 (13%)
Facet degeneration increase more than one grade 0 2 (4%)
MRI
Disc degeneration increase one grade 5 (9%) 5 (9%)
Disc degeneration increase more than one grade 0 0
  1. DH, disc height